Re: Effects pedal dilema
The ME-50 is an entry-level unit, IMO, for the guy who is new to FX and wants everything. But the FX, to me, did not sound like the effect you'd get by buying the individual pedal. Many of the FX just sound flat, dull, and lifeless. The '50 is a 12 or 16-bit processor while the market standard for digital seems to be 24.
In short, the ME-50 does a lot, but none of it very well.
As far as the other Boss pedals you mentioned, it seems to me that you'll have to decide which you like best.
Keeley mods both those pedals. I'd be curious to find out about Analog Mike.